Parlec ER40-0187 ER40 Collet 0.187 Inch

Product Description

The PARLEC ER40-0187 is an ER40 series collet designed for use in CNC machining centers, milling machines, and other rotating spindle equipment that accepts the ER40 collet standard. It holds workpieces or tooling at a clamping diameter of 0.187 inches, with a minimum collet capacity of 0.148 inches, giving it a usable clamping range suited to small-diameter end mills, drills, and reamers. The overall length measures 1.811 inches. Machining professionals and tool-crib technicians select ER collets for their reliability in high-speed applications and their wide availability across compatible toolholders.

This collet is used in production and job-shop environments wherever an ER40-compatible collet chuck or toolholder is installed. Typical applications include precision milling, drilling, boring, and tapping operations on CNC machining centers and manual mills. The 0.187 inch clamping size is a common fractional and wire-gauge tool shank diameter, making this collet a standard item in shops running a full range of cutting tools.

Key Features

• ER40 series collet standard for broad toolholder compatibility
• Clamping diameter of 0.187 inches with a minimum capacity of 0.148 inches
• Overall length of 1.811 inches for consistent tool projection
• Compact and lightweight at 0.5 pounds for fast tool changes
• Suits small-diameter end mills, drills, reamers, and taps

Compatibility

Designed as a direct-fit replacement or supplemental collet for any ER40-standard collet chuck or toolholder accepting the ER40 collet series.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Always power down and lock out the spindle before inserting or removing collets. Seat the collet fully into the collet nut before threading the nut onto the toolholder, and use a calibrated collet wrench and torque wrench to tighten to the toolholder manufacturer's specification. Inspect the collet bore and seating taper for chips or damage before each use.